condition mean min max ZT0-3 31.291800000000002 31.291800000000002 31.291800000000002 ZT4-7 11.3414 11.3414 11.3414 ZT8-11 21.6166 21.6166 21.6166 ZT12-15 27.2705 27.2705 27.2705 ZT16-19 65.2125 65.2125 65.2125 ZT20-23 45.1747 45.1747 45.1747